METZGERIA. 465 



postical surface of frond from the midrib ; bracts densely clothed 

 with very long decurved, divaricate, white hairs. Calyptra 

 elongato-jiyriform, densely clothed with long hooked and divaricate 

 hairs. Andra^cia postical, situated on the midrib, bracts contain- 

 ing 4-8 antheridia. Proliferous ; numerous young plants are 

 frequently produced from the margin of the fronds. 



Dimensions. — Fronds \\ to 2 inches long, 2*5 mm. broad ; 

 cells "05 mm. -"065 mm. 



Hab. — On the ground or rocks in moist situations or on trunks 

 of living trees. Eare. 



7. Tyn-y-Groes, Merionethshire, Wild §• Holf. Festiniog, 

 Merionethshire, Dr. Carrington §• W. H. P. 12. Brown Ghyll, 

 Great Langdale, Westmorland, Stabler §' Pearson. 13. New 

 (jf3i\\o\\2ij,J.McAnclreic. 15. ^x:\Qm2^x, J. Whitehead. 16. Arrochar, 

 p]. George. Common on wet rocks in some ravines, forming 

 luxuriant patches of two to three feet across ; rare on the hills, 

 but ascending to 1700 ft., Moidart, West Inverness, >S'. M. 

 Macvicar. 17a. Sutherlandshire, Br. R. K. Grecille. South of 

 Ireland, Killarney, P)r. D. Moore, Prof. Li/idber//, Canon Petf, 

 D. McArdle. 



Europe, Asia, North and South America, New Zealand, &c. 

 Obs. — This is a much larger plant than M.fnrcata, of a paler 

 yellow colour, with more elongate less furcate branches, which 

 are remarkably convex, having fewer hairs on the postical surface, 

 a cross- section showing about 2 near the margin and 3 on the 

 midrib, the wings being otherwise smooth, the hairs are also 

 curiously hooked-deflexed. 



Description of Plate CCVII. — Fig. 7. Plant natural size. 

 8. Portion of frond x CO (Elfving). 9. Cross-section of portion 

 of frond x 60 (ditto). 



